Comparison of Pre-operative Measurements With Intraoperative Aberrometry in Predicting Correction for Low Toric Lens Correction in Cataract Surgery

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-07-22

Study Completion Date

2019-09-25

Brief Summary

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Examination of the accuracy of toric predictive power in patients with 1.5 diopters of astigmatism or less.

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Detailed Description

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Based on preoperative keratometry and using the Baylor Nomogram and a standard factor for surgically-induced astigmatism, the investigators will calculate "keratometry-based total astigmatism" for each patient. This will be compared to "aberrometry-based total astigmatism", i.e. the total astigmatism measured by ORA in each case. With this information the investigators will determine in what portion of patients keratometry-based total astigmatism vs aberrometry-based total astigmatism predicts a need for astigmatism correction, (i.e., total astigmatism is greater than or equal to 0.5 D) during cataract surgery.

Conditions

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Cataract Surgery

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Intraoperative Aberrometry vs Preoperative Biometry

Retrospective view of existing chart data.

Group Type OTHER

Intraoperative Aberrometry vs preoperative biometry

Intervention Type OTHER

Hypothesis: Intraoperative aberrometry measures lower levels of astigmatism more accurately than preoperative biometry in patients undergoing cataract surgery.

Interventions

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Intraoperative Aberrometry vs preoperative biometry

Hypothesis: Intraoperative aberrometry measures lower levels of astigmatism more accurately than preoperative biometry in patients undergoing cataract surgery.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients who underwent conventional (non-femtosecond) cataract surgery and whose "data to be collected" are accessible and available from the ORA database.
* Patients whose medical records show they did not exhibit any significant ocular morbidity that would be expected to influence outcome measures.

Exclusion Criteria

* Patients with visually significant co-morbidities (corneal, retina, optic nerve disease) that could affect their visual outcome or ability to be refracted after.
* Patients with surgical complications either during or after surgery (capsule tears, iris trauma, decentered IOL, cystoid macular edema, etc.)
* Patients with previous refractive surgery.

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes